Experimental And Numerical Simulation Study On A1.5Stage Compressor

In order to meet the turbocharged unit capacity requirements of a compressor,zero-staging before an existing compressor is taken to improve the foregone design. Due tothe level of the aerodynamics design of zero-staging directly affects the entire unitperformance improvement reaching the expected goal or not, the Experimental must beentaken to test some parameters such as, the mass flow rate, efficiency and pressure ratiowhether meet the design requirements. Therefore build the test-bed of compressor zero-stagetest and measurement and relative numerical simulation research, the research has value andpractical significance for the design of capacity improvements for a compressor.First of all, the disposal has been introduced according to the test and measurementrequirements of the test. In the hardware, the installation including power system, thecirculation line system and test and measurement period of hardware device have beeninstalled. In software, using MCGS compile measurement and control system, to realize thefunction parameters of getting the real-time data and store each measuring parameters dataand monitoring data. This paper tests the measurement of the uniformity of inlet and exhaustin the exhaust valve100%,50%and35%of the three opening, and efficiency, the pressureratio of the characteristic parameters of the section distribution in different rotating speed anddifferent measuring flow field distribution parameters, meanwhile processing analysis the testdata.Another emphasis of this paper is using ANSYS/CFX software to numerical simulationfor the1.5-magnitude compressor. First of all, the volute of compressor has been designedand validated; the compressor characteristics and the flow filed on the experimental exhaustelbow have been analyzed. This paper analyzes the distribution of the total pressure losscoefficients and the import and export flow Angle, the distribution of high along when thecompressor working on the speed of the design point, the flow field of the compressor voluteand the elbow of the exhaust have been analyzed, and the local improvement of the structureon the exhaust elbow has been done. The conclusion is that, the bigger radius of curvature ofthe elbow, the more uniformity of the export flow field distribution has, the more discharge current capability of the compressor has.